Question

question 4
youre conducting a science experiment and notice that fruit flies with rounded wings produce more offspring. what does this suggest about rounded wings?

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question 5
a scientist is trying to determine if two species are closely related or if they just have the same external features. what would you look for to make this determination?

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question 6
a species of beetle in africa looks really similar to a different species in south america. how would the environment influence species development?

Explanation:

Question 4: In biology, traits that lead to higher offspring - production are often advantageous and may be selected for. Fruit flies with rounded wings having more offspring suggests that rounded wings are an advantageous trait, likely increasing the fitness of the fruit - fly individuals with this trait.
Question 5: To determine if two species are closely related or just have similar external features, genetic similarities are key. DNA sequences can show the degree of relatedness as closely related species have more similar DNA. Also, embryonic development patterns can be compared since closely related species often have similar embryonic stages.
Question 6: The environment can influence species development through natural selection. If the environments in Africa and South America have similar selective pressures (such as similar food sources, predators, or habitat types), it can lead to similar adaptations in different species (convergent evolution). Different environments can also lead to different adaptations in closely - related species (divergent evolution).

Answer:

Question 4: Rounded wings are an advantageous trait for fruit flies as they increase fitness by allowing for more offspring production.
Question 5: Look at genetic similarities (DNA sequences) and embryonic development patterns.
Question 6: Similar environments can lead to convergent evolution (similar adaptations in different species), while different environments can lead to divergent evolution.